Finding the Fourth Proportional to 142,683.12, 196,900.29 and 79,019.55

Step by Step Solution

1. Step 1: Write the proportion equation
   142,683.12 : 196,900.29 = 79,019.55 : x
2. Step 2: Convert to fraction form
   142,683.12/196,900.29 = 79,019.55/x
3. Step 3: Cross multiply
   142,683.12x = 196,900.29 × 79,019.55
4. Step 4: Simplify right side
   142,683.12x = 15,558,972,310.67
5. Step 5: Solve for x
   x = 15,558,972,310.67/142,683.12
6. Step 6: Final answer
   x = 109,045.64